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  2. Access modifiers - Wikipedia

    en.wikipedia.org/wiki/Access_modifiers

    Java has public, package, protected, and private; package is the default, used if no other access modifier keyword is specified. The meaning of these modifiers may differ from one language to another. A comparison of the keywords, ordered from the most restrictive to the most open, and their meaning in these three languages follows.

  3. List of Java keywords - Wikipedia

    en.wikipedia.org/wiki/List_of_Java_keywords

    List of Java keywords. A snippet of Java code with keywords highlighted in blue and bold font. In the Java programming language, a keyword is any one of 68 reserved words [1] that have a predefined meaning in the language. Because of this, programmers cannot use keywords in some contexts, such as names for variables, methods, classes, or as any ...

  4. Search engine - Wikipedia

    en.wikipedia.org/wiki/Search_engine

    Some engines suggest queries when the user is typing in the search box. A search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The user inputs a query within a web browser or a mobile app, and the search results are often a list of hyperlinks ...

  5. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.

  6. Subject indexing - Wikipedia

    en.wikipedia.org/wiki/Subject_indexing

    Subject indexing. Subject indexing is the act of describing or classifying a document by index terms, keywords, or other symbols in order to indicate what different documents are about, to summarize their contents or to increase findability. In other words, it is about identifying and describing the subject of documents.

  7. Synonym (database) - Wikipedia

    en.wikipedia.org/wiki/Synonym_(database)

    Synonym (database) In databases, a synonym is an alias or alternate name for a table, view, sequence, or other schema object. They are used mainly to make it easy for users to access database objects owned by other users. They hide the underlying object's identity and make it harder for a malicious program or user to target the underlying object.

  8. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    Eclipse Public License: dtSearch Desktop: Windows: Proprietary (30 day trial) Everything: Windows: Find files and folders by name instantly on NTFS volumes Freeware GNOME Storage: Linux: Open-source desktop search tool for Unix/Linux GPL Google Desktop: Linux, Mac OS X, Windows: Integrates with the main Google search engine page.

  9. Keyword research - Wikipedia

    en.wikipedia.org/wiki/Keyword_research

    For example: "Buy shoes" is a short tail keyword. Long-Tail Keywords — conversion rate is between 70-80%. They contain more specific details and have longer word counts (2-5 words). They get less search traffic but have a higher conversion rate. For example: "Buy breathable running shoes" is a long-tail keyword. Research examples